From StarWars.com:
Strictly for eyes only, Disney has devised a set of whimsical "backstage" posters to promote awareness of 2009's Star Wars Weekends event among employees, images not generally made available to the public (such a shame!)...."

Check out the above link to see this year's backstage posters and some of Disney's airport advertisements for Star Wars Weekends in 2006 and 2007.